Nut-lock



(No Model.) A

J. T. LA DU.

NUT LOCK.

180.808.085. Patented 008. 7,1884.

limiten Srarns Farrar rrrcn.

JOHN T. `LA DU, OF ROCHESTER, MINNESOTA, ASSIGNOR OF ONE-HALF TO VILLIS L. MOORE, OF HUTOHINSON, KANSAS.

NUT-LOCK.

SPECIFICATION formingpart of Letters Patent No. 306,085, dated October 7, 1884.

l Application filed March 7, 1884. (No model.)

.To all whom it ntay concern.-

Be it known that I, JOHN'T. LA DU, a citizen of the United States, :residing at Rochester, in the county of Olmsted and State of Minneseta, have invented certain new and usefullmprovements in Nut-Locks; and I do hereby declar'e the following to be a full, clear, and exact description ofthe invention, such aswillenable others skilled in the art towhich it appertains IO to make and use the same, reference being had to the accompanying drawings, and to letters or iigures of reference marked thereon, which form a part of this specification.

My invention .relates to improvements in nut-locks.

The object of my invention is to provide a strong, durable, and non-elastic device for locking-nuts, especially on railroad-rails, in connection withthe usual fish-plates, which 2O device is simple in construction, and readily applied or removed, and capable ofbeing used and reused many times without change in or injury to its structure, and is adapted to en` dure rough usage and resist the destructive action of the elements for a long time, and which will securely lock and hold the nuts to which it is applied permanently in position on their respective bolts.

In the accompanying` drawings, Figure l is 3o aperspective view of a section of railway-rail with fish plate, bolts, nuts, and my device in position as a lock. Fig. 2 is a front view ot' that part of my nut-lock which I call the washer-plate. Fig. 3 is a front view of my nut-lock, consisting of washer-plate A, locking-plate B, and rivet O, the locking-platebeing turned at right angles to the long axis of the washer-plate, this being the most convenient position for application. Fig. 4 is a 4o cross-section of the rivet I preferably use and the two plates of my lock as they are in the completed lock. Fig. 5 is a form of washer that may be used as an equivalent for or instead of the washer-plate shown in Fig. `2.

Like parts are represented by the same reference-letters in the several views.

Referring to the drawings, Arepresents a washer-plate made of plate-iron or other suitable material, having a slot, m, at one end for the receptionof the bolt, and the jaws a a, adapted to pass beneath the n ut and on the respective sides of such bolt, and at the other end the hole p for reception of rivet O.

B is the locking-plate made of plate-iron or other suitable material, provided with a slot, v

q, near 011e end, adapted to receive and allow the easy movement of said locking-plate 011 the rivet G, the end of the locking-plate nearest the slot being square, and adapted to engage and rest against the nut D, and the other 6o end (being the long arm ofthe lever as adjusted on the rivet C as a fulcrum) being` adapted to engage and hold the nut E. The locking-plate B is preferably cut off diagonally or on the arc of a circle having its center in the slot Q at its end farthest from the slot q, making an acute angle at o'.

A is the section of a railway-rail.

G is the ordinary fish-plate used in connecting railway-rails. O

H and I are bolts, and D and E nuts such as are commonly used in connecting railwayrails. The length of the locking-plate B is slightly less than the distance between the nuts, but only so much less than` said distance as will permit the easy application of said locking-plate between such nuts D and E. The locking-plate B is movably attached to the washer-plate Aby the slot q and rivet C, which rivet is rigidly affixed to the plate A, but al- 8o lows the free sliding and revolving movement ofthe locking-plate B on it.

The mode of applying my lock is as follow-s: The fish-plate G and the bolts H and I being applied to the railway-rail F in the ordinary way, the washer A (the lock in the position shown in Fig. 3) is placed on the iish-plate, with the jaws a Aa horizontally on the respective sides'of the bolt H, the plate at the inner end of the slot m being pushed firmly against 9o the bolt. The nut D is then put on its bolt H, and is screwed tightly down to position, leaving its edges horizontal and perpendicular. The nut E is put on and screwed firmly down to position, leaving its edges horizontal and perpendicular as near as may be, and thereupon the locking-plate B is swung over to the right, barely passing the edge of nut E until its lower side strikes against and rests upon the flange of the rail I or other suitable support, the corner rbeing at or about the middle of the side of the nut E, and thereupon the nut E,being unscrewed by a part of a revolution, engages against the end of the locking-plate B at its angle r, and the other end of the locking-plate at the time of swinging the plate over to the right, having been pushed back against and engaging the nut D, both nuts D and E are locked in the position shown in Fig. l, and cannot be unscrewed or removed except by removing the nutLlocl; by first tightening the nut E with a wrench or other sui'licient device.

Instead of the washer-plate shown. in Fig. 2, one of the form shown in Fig. 5 may be used, if preferred, and in such case this plate must be put on the bolt II before the nut D is put on.

Having thus described niy invention, what I claim as new, and desire to secure by Letters Patent, is-

l. A nut-lock consisting of a rigid non-elastic washer plate provided with a slot and jaws at one end and a rivet-hole at the other end, a rigid non-elastic lockingplate having a slot near one end, said plate being of such length as to extend from one of the nuts to be locked to the other nut to be locked, and a rivet affixed to said washer plate in and through the hole therein provided therefor, and upon which rivet sai d locking-pl ate slides and revolves by theY slot therein provided therefor, through which slot said rivet passes, and by which rivet and its retaining-head said locking-plate is movably attached to said washer-plate, said washer-plate by its slot andjaws being adaptedfto pass beneath and be held by one nut, and said locking-plate niovably attached to said washer-plate being adapted to extend between and engage against and lock said nut and another nut at a distance from said first nut, said nut-lock being capable of being removed and reapplied in the same place or elsewhere without change in or injury to its form or structure, substantially as and for the purpose specied.

2. The non-elastic washer-plate A, having slot m, jaws n u, and rivet-holep, the non-elastic locking-plate B, having slot qnear one end, and being inovably att-ached to washer-plate A by rivet C through said slot q, in combina tion withrnuts D and E, bolts H and I, fishplate G, and railway-rail F, said washer-plate A being adapted by its slot in and jaws n u to pass beneath and be secured. by the nut D,and said locking-plate B sliding and revolving upon rivet C, being adapted to extend between and engage against and look nuts D and E in position, substantially as and 'for the purpose described.

3. The washer-plate A, provided with aperture for reception of bolt II, and an aperture for reception of rivet C, locking-plate B, provided with aperture for reception of rivet C, and rivet C, connecting plates A and B, in combination with nuts D and E on their retainin g-bolt-s H and I, substantially as set forth.

In testimony whereof I a'flix my signature in presence of two witnesses.

JOHN fr. LA DU.

Vit-nesses:

XV. L. MOORE, ARTHUR L. Govn. 

